#1. The famous Tower of London was built as a fortress by William the Conqueror. Early in the Middle Ages the kings used it as a palace; later on it was turned into a prison, but only distinguished prisoners, including statesmen and princes, were held there. Today the Tower is a national museum, where, among other things, the jewelry of the English kings and queens is on display. William the Conqueror’s original purpose in building the Tower of London____ __.